The problem is that when I go to black and code from final cut I cannot enter the timecode at 58:00:00 - it replaces that code with 46:26:24. Same case for the in point on edit to tape. Whatever timecode I enter is translated into a junk timecode.

It's now confirmed with all parties that the deck was throwing errors. No matter what signal we sent it, it saw a 59.94 reference signal. VITC and LTC would not match and the timecode striped to tape, even though it was set to 23.98, was being seen by FCP as 29.97, hence the inability to enter a timecode accurately.

Whoever said it was the sync generator was pretty close. It was the sync gen in the deck.

Deck went back, now we're waiting for a replacement. FCP is behaving again.